Grinding machine



Nov. 26, 1929.

H. G. WEINLAND v@BINDING MACHINE` Filed Deo. lO, 1927 n attorney@ CII Patented Nov. 26, 1929 UNITED STATES PATENT OFFICE HERMON Gr. WEINLAND, F SPRINGFTELD, OHIO, ASSIGNOR TO THE SAFETY GRINDING WHEEL AND MACHINE COMPANY, OF SPRINGFIELD,' OHIO, A CORPORATION OF OHIO GRINDING MACHINE Application filed December 10, 1927. Serial No. 239,170.

This invention relates to grinding inachines7 it more particularly relating to dust collectors for such machines.

The object of my invention is to provide for adjusting the receiving end of the collector relatively to the grinding wheel to thereby adapt the collector to different conditions of work performed by the wheel to more effectively collect the dust.

In the accompanying drawings:

Fig. 1 is a top plan view of a machine embodying the improvements.

Fig. 2 is a side elevation of the same.

Fig. 3 is an enlarged top plan view of the dust collector.

Fig. lis an enlarged side elevation of the same.

Fig. 5 is a front elevation of the same.

' The grinding machine shown in the draW- ings is of the portable type which is pivotally suspended from a suitable support so that the machine can be swung to different points relatively to the work. Referring to the drawings, 1 represents a longitudinal tubular main support for the parts. There is connectedv to therear end of this support the casing 2 of anelectric motor and attached to the forward end of the support is a cross-head 3 providedrwith an integrally formed bearing l for the shaft 5 of a grinding wheel 6l This grinding wheel is driven from the motor through the medium of a belt 7 which is driven from the motor shaft (not shown) and passes about a pulley 8 on the grinding wheel shaft 5. The belt is covered by a casing 9 and the grinding wheel is protected by a hood '10. There is also connected to the support 1 a hanger 11 by which the machine may be pivotally suspended by a link (not shown) from any suitable point, this hanger being adj ustably secured to the support at the proper point to give the desired degree of balance.

The dust collector proper is indicated at 12 and it consists of an elongated hollow body f of sheet metal open at both ends with its forward end larranged adjacent the grinding wheel 6 and its rear end connected with a flexible tube 13 which in turn is connected with a suitable suction device (not shown). The forward end of the collector 12 is provided with an adjustable mouth piece 14 which is held in dierent positions of adjustment by thumb screws 15 threaded on bolts 16 carried by the collector and extending through slotted openings 17 in the mouth piece.

In the operation of grinding machines of this type the grinding wheel engages the work sometimes on one side of the vertical center thereof and sometimes on the other side, depending on the center of the casting which is being ground. As the dust from the wheel is thrown by centrifugal force tangentially it is obvious that this dust will take dierent courses depending upon which portion of the wheel'is performing the abrasive action upon the work. Tn order to adapt the collector to these varying conditions, there is provided means for adjusting the receiving end of the collector with relation to the wheel and to that end the collector is supported in the following manner: Attached to the support 1 ,is abracket 18, the bracket being clamped to the support by a clamping member 19 secured in position by the bolts 20. Projecting laterally froml the bracket 18 is a stud 21 upon which is pivotally mounted a lever 22; the lever being held in frictional engagement with the face of the bracket by a coil spring 23 which is interposed between the lever and l a nut 24 threaded on the end of the stud, a lock nut 25 being preferably employed to keep the nut 24C from turning. The lower end of the lever 22 is bent laterally and secured to the collector 12. Pivoted to the upper end of the lever 22 is a forwardly eX- tending rod 26 which projects to within convenient reach of the operator, this rod eX- tending loosely through a keeper 27 secured to one Yof the handle bars 28 of the machine-f same time by manipulating the rod 26-may swing thevlever 22 so as topositioni the re ceivmg endA oif. the collector either as shown:

in full lines or dotted lines in Fig. 2 or in any intermediate point therebetween.,

It will be noticed that the handle bar 28 is extended rearwardly. so; as to.l liez alongside of the dust collector to thereby form a protecting guard for same.

Having thus describedI my invention, I claimt 1'. In a grindingl` machine, a support, a grinding wheel-and operating mechanism-for the same mounted onlsaid. support, ay hollow body torming adust'. ollector movably mounted uponsaidsupport with its receiving end adj acent'said wheel, and manually. operatedl means for adjusting said hollow. body to alter the position of the receivingVl end thereof` with relationl tof saidI Wheel.

2.- Ih a` grinding machine, a. support, a grinding Wheel and' operating mechanism therefor carried by' saldi support, a hollow body forming a dust collector. pivotally.'y confF necte'df withl saidi support' With thef. receiving endthereof adjacent the Alower porltion'offsaid Wheel?, andfmeans for manually swingingl said hollow` body 'about its pivotalv connectionlwith saidj support to; alter the position ofi. the re- ,ceiving end of said body relatively'to: said' wheel;

3L In a grinding machine, a' grinding wheel, a d'ust collector having. its receiving end arranged adjacent to said'. Wheel,V a pivotedsupport for saidicollector, and-an operating rod connected' withE said piivotah support and extending to within. convenienti. reach of the operator. y

t; In a grinding machine,'` an support',.a grinding Wheel and operating devicesforthe same carriedi by saidsupport, a. hollow'bodly forming a dust collectorpivotally mounted jacent saidwlieel, manually operated means for swinging saidbody about itspivotalconnection to alter thepositionl of itsreceiving end* with relationtosaid Wheel; and aiiiexibletube connected with the discharge endlof said. body. j

5. In a grinding macliine,. a'. suspended movable support, a grinding'wheeland operating devices for same carried by' saidE support, ay hood tor saidwheelfopen on itsiunder uponsaidfsupport wtlrits receiving end ad-y side, a hollow body movably connected With said support 'forming a dust collector and having its receiving end adjacent the exposed part of said. Wheel, a ieXible tube connected with the discharge end of said body, and manually operated means for adjusting the position of said body with relation to said support to alter the position of the receiving end thereof relatively to said Wheel.

6. In a grinding machine, a movable supportga grinding Wheel' and operating( devices for same carriedby said support, aA hood for sa-idwheel open on its under side, a hollow body forming a dust collector. movablyr connected with said`- support W-ithf itsreceiving end adjacent said Wheel, an adjustablemmith piece: carried by the receiving end of" said body, and means for manually moving said body with] relation; to said support to alter the position of the receiving end thereof relatively tosaid Wheel:

75.. In a grindingmacliine,.a-.pivotally suspended support, motor mounted on one end ofl said'. supportaa grinding; Wheelimounted at theotlierfend.: of said;support,;a'hoodl for said Wheel open atits'lower sideyanhollovvA body forming. ai dust collector vmovablyv connected witihzsaid support with its'receivin'g;f and adjacent said wheel, .axpivoted` mouthpiece con nected with: the receiving'endlof saidiholl'ow bodyg. ai flexiblea tube= connected with the discharge end of said bodyyand manuallyy op# eratedameans for-alteringgthe position ofthe receiving. end; of saidI body with relation. to said wheel.

8.. Inl a. gnindingz. machine, a .pivotallyi sus pended main support, a motor mounted at one. end of; said* support, grindingj Wheel mountedatthe other end of said support, a

hoodi for said Wheel open atv itslower sidea` dust collectorhaving; its receiving end adjacentthe. exposed part of said. Wheel, an adjustable mouth'pieceonithe receiving endl of saidcollecton, pivoted support for said collector.y mounted. on. said main supportand manuallyfoperatedimeans connected'withsaid collecton'support for adjustingA the receiving endf ot. said dust` collector relatively toisaid Wheel, Y Y l 9: In' a grinding. machmea pivotally suspended lmain: support,.. a grinding: Wheel. and operating mechanlsmrfon the `same lcarried by said? support=a hood for saidl Wheel open at itsi lower side, af. lever pivotally connected with: said: support, a hollow body forminga dust coliectonconnectbd with one 'endof said leverrvvith its Yreceiving4 endadjacent the 10W- er'side ofi saidfvvheel, a rod connected with the othen end of said lever eXtendingto/a point'within Vconvenient reachi ofv the operator: ton adjustingthe receiving` endfvof said body' with@ relation, to said` Wheelg, yieldable means'forf holdingfsaid lever lindiiterentfp'osit'ionsfof adjustment, anda flexible tube c011- ne'cted with: they discharge end of` said` body.

10. In a portable grinding machine, a support, a grinding Wheel carried by said support, a hood for said grinding Wheel open at its under side, a dust collecting body movably connected with said support and arranged at one side thereof With its receiving end adjacent said Wheel, and an Operating handle having a bar connected With said support, said bar being arranged to form a guard for said hollow body.

In testimony whereof, I have hereunto set my hand this 6th day of December, 1927.

HERMON G. WEINLAND. 

